Improvement in hollow augers



G. N. STEARNS. Hollow Auger.

'N0. 20!,064. Patented March 5, 1878..

VV/T/VfSSES AWN/70R UNITED STATES PATEN'IJDMWE- GEORGE N. STEARNS, OFSYRACUSE, NEW YORK.

IMPROVEMENT IN HOLLOW AUGERS.

Specification forming part of Letters Patent No.

April To all whom it may concern Be it known that I, GEORGE N. STEARNS,of Syracuse, New York, have invented Improvements in Hollow Angers, ofwhich the following is a specification:

In my Patent N 0. 130,826, for improvement in hollow angers, the barrelis made in two sections, to one of which, A, there is a strap, M,affixed, having a slot in it, through which a set-screw passes intosection B, to hold the jaws together. I now find that a single strap, astherein described, is insufficient, allowing the parts to spring. I havethere fore improved this part of my original inven tion, as shown in theannexed drawings, in which I have applied a second strap, M, Figures 1,2, and 4, through which and section B, I pass a screw-bolt, 0, (showndetached at Fig. 3,) the head of which bears against M, and the nut .10against the strap M, thus fastening both straps with one screw, and thusholding the jaws firmly in place.

On the outer end or face of section A there is a projection orcutter-seat, a, with a throat or opening, 71, to discharge the shavingsfrom the cutter K. a This cutter is bev- 201,064, dated March 5, 1878;application filed 26, 1876.

eled on both sides, so that it can be reversed, and wear either side upalternately, to equalize it. This cutter rests upon the seat a, and isheld down by a cap, (shown detached in Fig. 5,) having a recess in it.into which the cutter-shank fits, and a hole at s, a slot at t, throughwhich screws pass to hold the cutter securely down upon its seat a.

The screw 8 is the pivot upon which the cap swivels to properly set thecutter, the slot at t giving it the necessary play for that purpose, andthe screw therein holds it firmly in position when set.

Having thus fully described my improvements in hollow angers, I claim asmy invention- The cutter K, attached to the hollow auger by means of thepivoted cap a constructed, arranged, and combined as and for thepurposes herein described.

In witness whereof I have hereto set my hand.

G. N. STEARNS. In presence of P. B. MOLENNAN, J. J. GRE NOUGH.

